A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
Classification: Zirconium and articles thereof nesoi
NSN 5985-00-954-4316
NSN 5975-01-512-8525
NSN 5910-01-366-2812
NSN 6240-00-456-2578
NSN 4140-00-787-8531
NSN 6145-01-252-7675
NSN 6110-01-187-0603
NSN 5930-01-512-5055
NSN 5965-00-439-6287
NSN 6620-01-481-1358
NSN 5990-01-386-5561
NSN 5895-01-256-0075